This means the BoE will offer to exchange less liquid bank assets for cash, without limitation, allowing banks a cash buffer for six months at cheaper rates.
The Bank already offers ILTR operations to banks and building societies every month, but the extra auctions means lenders will have access to billions of pounds of extra liquidity, with four auctions now taking place around the vote in June.
"The Bank will continue to monitor market conditions carefully and keep its operations under review," the central bank said in a statement issues late Monday.
The BoE offered billions of pounds in extra, emergency financial support for banks around the time of the financial crisis as funding dried up and the central bank was forced to step in as a lender of last resort.
BoE Governor, Mark Carney addressed U.K. Members of Parliament (MPs) on Tuesday morning, after writing a letter to the government on the impact of the U.K.'s EU membership.
Carney confirmed that the central bank would not make any attempt to sway voters on their decision to remain inside or outside of the European monetary union.